Remote Video Communication: No mobile app installation is required, a one-click pairing method is used, making it more convenient and faster. Once the doorbell is connected to the monitor, the video feed from the outdoor camera can be viewed on the indoor monitor. This is especially useful for elderly people and children who do not have a smartphone. The monitor allows you to easily see what is happening in front of your door, providing extra security. Two-Way Communication: The video doorbell with monitor features two-way communication with high-quality speakers and a sensitive microphone. This enables clear and smooth conversations with the person at the door. There is no need to open the door or use a traditional peephole, and you can clearly see the area outside the door from your bedroom. You can adjust the volume to avoid disturbing other family members while having important conversations. Wide-Angle Viewing: The wide-angle camera provides a large field of view in front of the door with no blind spots. With the 1080P HD camera, you can clearly see every detail and recognize the faces of your visitors. Even if you have multiple visitors, you can monitor them all, significantly increasing safety. The indoor host can be connected and used for long-term operation. Day and Night Vision Camera: The wireless video doorbell is equipped with a powerful infrared night vision light and an ICR infrared filter that can automatically switch between day and night modes. It ensures clear images even in dark environments. With 850 nm and 4 high-quality infrared night lights, you can see everything clearly, even in complete darkness. Built-in Battery: The wireless video doorbell system is equipped with a high-capacity battery that works even during power outages. The outdoor unit is equipped with an energy-saving 800mAh polymer battery that can last up to 4-6 months in standby mode. The doorbell is equipped with a 2.4G module that allows wireless connection without an internet connection, with a range of up to 100 meters. Specifications: Operating Humidity: 10% - 90% SD Card: Supports up to 256G Viewing Angle: 70 Night Vision Type: Infrared Night Vision Display: 4.3 inches Power Information: DC5V/2A Audio Information: Built-in speakers, microphone